<!doctype html> 
<html lang="en"> 
 <head> 
  <meta charset="UTF-8"> 
  <meta name="Generator" content="EditPlus®"> 
  <meta name="Author" content=""> 
  <meta name="Keywords" content=""> 
  <meta name="Description" content=""> 
  <title>canvas场景连线特效</title> 
  <style type="text/css"> 
 *{
    margin: 0px;
    padding: 0px; 
}
body{
    background-color: #f4f4f4;
}
  </style> 
 </head> 
 <body> 
    <!-- <canvas id="c_n9" width="1366" height="403" style="position: fixed; top: 0px; left: 0px; z-index: -1; opacity: 0.5;"></canvas> -->
    <script type="text/javascript" src="test.js" opacity= 0.7></script>
 </body> 
</html>